I think zombie apocalypse evolve from movies when different zombie movies began and hit the box office today. The Centers for Disease Control is tasked with a large job. The agency is responsible for informing citizens of public health threats. Get ready for zombie attack though we just see it in movie but in some news it seems it's real. Source: MatchFinancial.com

or dream therapy went too deep. It was found in the mountains and infected the brass. Everyone went insane or died, or a little of both. Then they came back to civilization and spread the word. Sometimes it's better to sleep than to walk, but if you sleep too deep you never wake up. Then you're gone and something takes the place of what was left behind.